This is a cross-cutting program involving many group within the National Science Foundation.

The solicitation calls for proposals in three classes -- small groups, large groups, and institutes. The total amount allocated for this program is anticipated to be $11.4 million.

The program synopsis notes the role computation "as the third pillar supporting innovation and discovery in science and engineering... central to NSF's future vision of Cyberinfrastructure Framework for 21st Century Science and Engineering."

The synopsis further states that "In order to nurture, accelerate and sustain this critical mode of scientific progress, NSF is establishing a new program, Software Infrastructure for Sustained Innovation (SI2), with the overarching goal of transforming innovations in research and education into sustained software resources that are an integral part of the cyberinfrastructure."